cbcvebase.
CVE-2024-56780
published 2025-01-08

CVE-2024-56780: In the Linux kernel, the following vulnerability has been resolved: quota: flush quota_release_work upon quota writeback One of the paths quota writeback is…

PriorityP419medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.21%
11.5th percentile
In the Linux kernel, the following vulnerability has been resolved: quota: flush quota_release_work upon quota writeback One of the paths quota writeback is called from is: freeze_super() sync_filesystem() ext4_sync_fs() dquot_writeback_dquots() Since we currently don't always flush the quota_release_work queue in this path, we can end up with the following race: 1. dquot are added to releasing_dquots list during regular operations. 2. FS Freeze starts, however, this does not flush the quota_release_work queue. 3. Freeze completes. 4. Kernel eventually tries to flush the workqueue while FS is frozen which hits a WARN_ON since transaction gets started during frozen state: ext4_journal_check_start+0x28/0x110 [ext4] (unreliable) __ext4_journal_start_sb+0x64/0x1c0 [ext4] ext4_release_dquot+0x90/0x1d0 [ext4] quota_release_workfn+0x43c/0x4d0 Which is the following line: WARN_ON(sb->s_writers.frozen == SB_FREEZE_COMPLETE); Which ultimately results in generic/390 failing due to dmesg noise. This was detected on powerpc machine 15 cores. To avoid this, make sure to flush the workqueue during dquot_writeback_dquots() so we dont have any pending workitems after freeze.

Affected

36 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
debianlinux-6.1< linux 6.1.123-1 (bookworm)linux 6.1.123-1 (bookworm)
linuxlinux
linuxlinux
linuxlinux
linuxlinux
linuxlinux>= 3027e200dd58d5b437f16634dbbd355b29ffe0a6 < 3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb3e6ff207cd5bd924ad94cd1a7c633bcdac0ba1cb
linuxlinux>= 4.19.295 < 4.204.20
linuxlinux>= 5.10.195 < 5.10.2315.10.231
linuxlinux>= 5.15.132 < 5.15.1745.15.174
linuxlinux>= 5.4.257 < 5.4.2875.4.287
linuxlinux>= 6.1.53 < 6.1.1206.1.120
linuxlinux>= 6.4.16 < 6.56.5
linuxlinux>= 6.5.3 < 6.66.6
linuxlinux>= 86d89987f0998c98f57d641e308b40452a994045 < 6f3821acd7c3143145999248087de5fb4b48cf266f3821acd7c3143145999248087de5fb4b48cf26
linuxlinux>= 89602de9a2d7080b7a4029d5c1bf8f78d295ff5f < ab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cbab6cfcf8ed2c7496f55d020b65b1d8cd55d9a2cb
linuxlinux>= d40c192e119892799dd4ddf94f5cea6fa93775ef < a5abba5e0e586e258ded3e798fe5f69c66fec198a5abba5e0e586e258ded3e798fe5f69c66fec198
linuxlinux>= dabc8b20756601b9e1cc85a81d47d3f98ed4d13a < bcacb52a985f1b6d280f698a470b873dfe52728abcacb52a985f1b6d280f698a470b873dfe52728a
linuxlinux>= dabc8b20756601b9e1cc85a81d47d3f98ed4d13a < 8ea87e34792258825d290f4dc5216276e91cb2248ea87e34792258825d290f4dc5216276e91cb224
linuxlinux>= dabc8b20756601b9e1cc85a81d47d3f98ed4d13a < ac6f420291b3fee1113f21d612fa88b628afab5bac6f420291b3fee1113f21d612fa88b628afab5b
linuxlinux_kernel
linuxlinux_kernel>= 0 < 5.10.234-15.10.234-1
linuxlinux_kernel>= 0 < 6.1.123-16.1.123-1
linuxlinux_kernel>= 0 < 6.12.5-16.12.5-1
linuxlinux_kernel>= 0 < 6.12.5-16.12.5-1

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv8.8HIGH
vendor_ubuntu8.8HIGH
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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